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High resolution 2D beam steerer made from cascaded 1D liquid crystal phase gratings

Optical beam steering (BS) has multiple applications in fields like target seeking and tracking, optical tweezers, billboard displays and many others. In this work, a two-dimensional beam deflector based on blaze gratings is presented. Phase-only 1D blaze gratings have been prepared using maskless D...

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Autores principales: de Blas, Mario García, García, Javier Pereiro, Andreu, Sergio Vera, Arregui, Xabier Quintana, Caño-García, Manuel, Geday, Morten Andreas
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8948363/
https://www.ncbi.nlm.nih.gov/pubmed/35332249
http://dx.doi.org/10.1038/s41598-022-09201-0
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author de Blas, Mario García
García, Javier Pereiro
Andreu, Sergio Vera
Arregui, Xabier Quintana
Caño-García, Manuel
Geday, Morten Andreas
author_facet de Blas, Mario García
García, Javier Pereiro
Andreu, Sergio Vera
Arregui, Xabier Quintana
Caño-García, Manuel
Geday, Morten Andreas
author_sort de Blas, Mario García
collection PubMed
description Optical beam steering (BS) has multiple applications in fields like target seeking and tracking, optical tweezers, billboard displays and many others. In this work, a two-dimensional beam deflector based on blaze gratings is presented. Phase-only 1D blaze gratings have been prepared using maskless Direct Laser Writing (DLW) resulting in high-resolution structures in indium-tin oxide (ITO) coated glass wafers. The device is composed of two identical 1D liquid crystal (LC) cells cascaded orthogonally back-to-back, with a resultant active area of 1.1 × 1.1 mm(2). The 1D cells have been prepared with 144 pixels each with a 7.5 µm pitch. The total 288 pixels are driven by a custom made 12-bit Pulse Width Modulation (PWM) electronic driver, allowing for an arbitrarily high resolution. The system performance is documented, and the efficiency of the system has been tested. A maximum diagonal steering angle of ± 3.42° was achieved.
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spelling pubmed-89483632022-03-28 High resolution 2D beam steerer made from cascaded 1D liquid crystal phase gratings de Blas, Mario García García, Javier Pereiro Andreu, Sergio Vera Arregui, Xabier Quintana Caño-García, Manuel Geday, Morten Andreas Sci Rep Article Optical beam steering (BS) has multiple applications in fields like target seeking and tracking, optical tweezers, billboard displays and many others. In this work, a two-dimensional beam deflector based on blaze gratings is presented. Phase-only 1D blaze gratings have been prepared using maskless Direct Laser Writing (DLW) resulting in high-resolution structures in indium-tin oxide (ITO) coated glass wafers. The device is composed of two identical 1D liquid crystal (LC) cells cascaded orthogonally back-to-back, with a resultant active area of 1.1 × 1.1 mm(2). The 1D cells have been prepared with 144 pixels each with a 7.5 µm pitch. The total 288 pixels are driven by a custom made 12-bit Pulse Width Modulation (PWM) electronic driver, allowing for an arbitrarily high resolution. The system performance is documented, and the efficiency of the system has been tested. A maximum diagonal steering angle of ± 3.42° was achieved. Nature Publishing Group UK 2022-03-24 /pmc/articles/PMC8948363/ /pubmed/35332249 http://dx.doi.org/10.1038/s41598-022-09201-0 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
de Blas, Mario García
García, Javier Pereiro
Andreu, Sergio Vera
Arregui, Xabier Quintana
Caño-García, Manuel
Geday, Morten Andreas
High resolution 2D beam steerer made from cascaded 1D liquid crystal phase gratings
title High resolution 2D beam steerer made from cascaded 1D liquid crystal phase gratings
title_full High resolution 2D beam steerer made from cascaded 1D liquid crystal phase gratings
title_fullStr High resolution 2D beam steerer made from cascaded 1D liquid crystal phase gratings
title_full_unstemmed High resolution 2D beam steerer made from cascaded 1D liquid crystal phase gratings
title_short High resolution 2D beam steerer made from cascaded 1D liquid crystal phase gratings
title_sort high resolution 2d beam steerer made from cascaded 1d liquid crystal phase gratings
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8948363/
https://www.ncbi.nlm.nih.gov/pubmed/35332249
http://dx.doi.org/10.1038/s41598-022-09201-0
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